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Can't Extract Value From GridHTMLEditorColumn

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Grid

This is a migrated thread and some comments may be shown as answers.

Richard Weeks asked on 23 Apr 2012, 06:44 AM

I've bumped up against an unexpected roadblock when trying to extract the entered HTML from a GridHTMLEditorColumn.

Briefly, I have something like this:

In the Grid:

<telerik:GridHTMLEditorColumn

DataField="Content"

HeaderText="Content"

UniqueName="Content"

Visible="false">

</telerik:GridHTMLEditorColumn>

Extracting the value:

var hashTable = new Hashtable();

using (var ownerTableView = e.Item.OwnerTableView)

{

ownerTableView.ExtractValuesFromItem(hashTable, editedItem);

}

Then:

if (hashTable.ContainsKey("Content"))

{

this.Content = hashTable["Content"].ToString();

}

Or:

var tableCell = editedItem["Content"];

if (tableCell != null)

{

var radEditor = tableCell.Controls[0] as RadEditor;

if (radEditor != null)

{

// At this point, all I have is string.Empty for radEditor.Content

this.Content = string.IsNullOrEmpty(radEditor.Content) ? string.Empty : radEditor.Content;

}

Nothing works. I can get hold of all my other bound column values. But I can't for the life of me work out how to get the HTML content.

Help!

Richard

3 Answers, 1 is accepted

answered on 23 Apr 2012, 07:46 AM

Hello Richard,

Here is the sample code that I tried to access the update values which worked as expected.
C#:

protected void RadGrid1_ItemCommand(object sender, GridCommandEventArgs e)

{

if (e.CommandName == RadGrid.UpdateCommandName)

{

GridEditableItem editedItem = e.Item as GridEditableItem;

RadEditor radEditor = (RadEditor)editedItem["Content"].Controls[0];//accessing HTMLColumnEditor

string value1 = radEditor.Text;

//accessing the updated values using HashTable

Hashtable newValues = new Hashtable();

e.Item.OwnerTableView.ExtractValuesFromItem(newValues, editedItem);

if (newValues.ContainsKey("Content"))

{

string value2 = newValues["Content"].ToString();

}

Thanks,
Shinu.

answered on 23 Apr 2012, 11:47 PM

I can see my approach was correct. Using your code, I retrieve string.Empty for the first attempt and null at the second.

I was mystified. To further test, I created a declarative only page using EntityDataSource. I was able to produce a grid that worked as expected.

After further enabling / disabling of code blocks, I have now traced the issue to a method we have been using for a very long time to set repetitive aspects of the RadGrid (allowing our declarative code to remain clear and concise). This methods is called in the Page_Init page event and is as follows:

public static void ApplyDefaultGridSettings(RadGrid radGrid)

{

radGrid.Skin = "Telerik";

radGrid.GridLines = GridLines.None;

radGrid.ShowFooter = false;

radGrid.GroupingEnabled = false;

radGrid.AutoGenerateColumns = false;

radGrid.CssClass = "telerikGrid";

radGrid.HeaderContextMenu.EnableAutoScroll = false;

radGrid.MasterTableView.GridLines = GridLines.None;

radGrid.MasterTableView.CommandItemDisplay = GridCommandItemDisplay.Top;

radGrid.MasterTableView.CommandItemSettings.AddNewRecordText = @"Add New Record.";

radGrid.MasterTableView.CommandItemSettings.RefreshText = string.Empty;

radGrid.MasterTableView.NoMasterRecordsText = @"No records have been added or no records match your current filter criteria.";

radGrid.MasterTableView.ShowHeadersWhenNoRecords = true;

radGrid.MasterTableView.EditFormSettings.ColumnNumber = 2;

radGrid.MasterTableView.EditFormSettings.FormTableItemStyle.Wrap = false;

radGrid.MasterTableView.EditFormSettings.FormCaptionStyle.CssClass = "EditFormHeader";

radGrid.MasterTableView.EditFormSettings.FormMainTableStyle.CellSpacing = 0;

radGrid.MasterTableView.EditFormSettings.FormMainTableStyle.CellPadding = 3;

radGrid.MasterTableView.EditFormSettings.FormMainTableStyle.Width = Unit.Percentage(100);

radGrid.MasterTableView.EditFormSettings.FormTableStyle.GridLines = GridLines.Horizontal;

radGrid.MasterTableView.EditFormSettings.FormTableStyle.CellSpacing = 0;

radGrid.MasterTableView.EditFormSettings.FormTableStyle.CellPadding = 2;

radGrid.MasterTableView.EditFormSettings.FormTableStyle.CssClass = "module";

radGrid.MasterTableView.EditFormSettings.FormTableStyle.Height = Unit.Pixel(110);

radGrid.MasterTableView.EditFormSettings.FormTableStyle.Width = Unit.Percentage(100);

radGrid.MasterTableView.EditFormSettings.FormTableAlternatingItemStyle.Wrap = false;

radGrid.MasterTableView.EditFormSettings.FormStyle.Width = Unit.Percentage(100);

radGrid.MasterTableView.EditFormSettings.FormStyle.BackColor = ColorTranslator.FromHtml("#EEF2EA");

radGrid.MasterTableView.EditFormSettings.EditColumn.UpdateText = @"Update Record";

radGrid.MasterTableView.EditFormSettings.EditColumn.UniqueName = "EditCommandColumn1";

radGrid.MasterTableView.EditFormSettings.EditColumn.ButtonType = GridButtonColumnType.ImageButton;

radGrid.MasterTableView.EditFormSettings.FormTableButtonRowStyle.HorizontalAlign = HorizontalAlign.Right;

radGrid.MasterTableView.EditFormSettings.FormTableButtonRowStyle.CssClass = "EditFormButtonRow";

radGrid.MasterTableView.RowIndicatorColumn.HeaderStyle.Width = Unit.Pixel(20);

radGrid.MasterTableView.ExpandCollapseColumn.HeaderStyle.Width = Unit.Pixel(20);

radGrid.FilterMenu.EnableTheming = true;

radGrid.FilterMenu.CollapseAnimation.Duration = 200;

radGrid.FilterMenu.CollapseAnimation.Type = AnimationType.OutQuint;

}

If I pass my RadGrid to this method, attempts to retrieve the HTMLEditor content will fail no matter what I try. If I remove the call, everything works (but I will have to manually set all of the above declaratively = yuck).

Are you able to see why the code above would introduce this behaviour?

Richard